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109108189 = 3113925321
BaseRepresentation
bin1101000000011…
…01101111011101
321121022021022001
412200031233131
5210412430224
614454322301
72463255451
oct640155735
9247267261
10109108189
1156652663
1230659391
13197b2478
14106c2661
1598a3544
hex680dbdd

109108189 has 8 divisors (see below), whose sum is σ = 113442560. Its totient is φ = 104824800.

The previous prime is 109108187. The next prime is 109108211. The reversal of 109108189 is 981801901.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 109108189 - 21 = 109108187 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (109108187) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8352 + ... + 16969.

It is an arithmetic number, because the mean of its divisors is an integer number (14180320).

Almost surely, 2109108189 is an apocalyptic number.

It is an amenable number.

109108189 is a deficient number, since it is larger than the sum of its proper divisors (4334371).

109108189 is a wasteful number, since it uses less digits than its factorization.

109108189 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25491.

The product of its (nonzero) digits is 5184, while the sum is 37.

The square root of 109108189 is about 10445.4865372562. The cubic root of 109108189 is about 477.8436096636.

The spelling of 109108189 in words is "one hundred nine million, one hundred eight thousand, one hundred eighty-nine".

Divisors: 1 31 139 4309 25321 784951 3519619 109108189